Observation of quasi-coherent edge fluctuations in Ohmic plasmas on NSTX

Banerjee, S.; Diallo, A.; Zweben, S.J.

doi:10.11578/1366985

Title: Observation of quasi-coherent edge fluctuations in Ohmic plasmas on NSTX

Abstract

A quasi-coherent mode with frequency f = 40 kHz is observed in Ohmic plasmas in NSTX with the gas puff imaging diagnostic (GPI). This mode is located predominantly just inside the separatrix, with a maximum fluctuation amplitude similar to that of the broadband turbulence in the same frequency range. The quasi-coherent mode has a poloidal wavelength 16 cm and a poloidal velocity 49 km/s in the electron diamagnetic direction, which are similar to the characteristics expected from a linear drift-wave like mode in the edge.

Authors:

Banerjee, S.;

;

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Publication Date:: 2016-04-01

DOE Contract Number:: AC02-09CH11466

Research Org.:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Keywords:: Turbulence

OSTI Identifier:: 1366985

DOI:: https://doi.org/10.11578/1366985

Citation Formats


                    Banerjee, S., Diallo, A., and Zweben, S.J. Observation of quasi-coherent edge fluctuations in Ohmic plasmas on NSTX.  United States: N. p., 2016. 
        Web.  doi:10.11578/1366985.

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                    Banerjee, S., Diallo, A., & Zweben, S.J. Observation of quasi-coherent edge fluctuations in Ohmic plasmas on NSTX.  United States.  doi:https://doi.org/10.11578/1366985

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                    Banerjee, S., Diallo, A., and Zweben, S.J. 2016.  
"Observation of quasi-coherent edge fluctuations in Ohmic plasmas on NSTX".  United States.  doi:https://doi.org/10.11578/1366985.  https://www.osti.gov/servlets/purl/1366985. Pub date:Fri Apr 01 00:00:00 EDT 2016

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@article{osti_1366985,

  title        = {Observation of quasi-coherent edge fluctuations in Ohmic plasmas on NSTX},

  author       = {Banerjee, S. and Diallo, A. and Zweben, S.J.},

  abstractNote = {A quasi-coherent mode with frequency f = 40 kHz is observed in Ohmic plasmas in NSTX with the gas puff imaging diagnostic (GPI). This mode is located predominantly just inside the separatrix, with a maximum fluctuation amplitude similar to that of the broadband turbulence in the same frequency range. The quasi-coherent mode has a poloidal wavelength 16 cm and a poloidal velocity 49 km/s in the electron diamagnetic direction, which are similar to the characteristics expected from a linear drift-wave like mode in the edge.},

  doi          = {10.11578/1366985},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {2016},

  month        = {4}

}

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DOI: https://doi.org/10.11578/1366985

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Works referenced in this record:

Observation of quasi-coherent edge fluctuations in Ohmic plasmas on National Spherical Torus Experiment
journal, April 2016

Banerjee, Santanu; Diallo, A.; Zweben, S. J.
Physics of Plasmas, Vol. 23, Issue 4
https://doi.org/10.1063/1.4946871

Works referencing / citing this record:

Observation of quasi-coherent edge fluctuations in Ohmic plasmas on National Spherical Torus Experiment
journal, April 2016

Banerjee, Santanu; Diallo, A.; Zweben, S. J.
Physics of Plasmas, Vol. 23, Issue 4
https://doi.org/10.1063/1.4946871

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Title: Observation of quasi-coherent edge fluctuations in Ohmic plasmas on NSTX

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